Su-57 Showcases 10-Second Takeoff using 0.8km Runway at Aero India 2025, Highlighting Russia's AL-41 Engine Powers

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Aero India 2025 witnessed a stunning display of Russian aerospace engineering prowess as the Su-57, a fifth-generation fighter jet, executed a breathtaking takeoff in a mere 10 seconds using only 0.8 kilometers of runway. This impressive feat underscores the exceptional capabilities of the aircraft's AL-41 engine.

This achievement marks a significant leap forward in military aviation technology, demonstrating that short takeoff and landing (STOL) capabilities can be integrated into fifth-generation fighter jets without relying on extensive and costly infrastructure.

At the heart of the Su-57's remarkable performance lies the AL-41F1 engine, a testament to Russia's advanced aerospace engineering. This afterburning turbofan engine boasts an exceptional thrust-to-weight ratio and high performance, enabling the Su-57 to achieve rapid takeoffs and unparalleled maneuverability in the air.

The AL-41 engine's thrust vectoring nozzles, coupled with cutting-edge engine technology, deliver unmatched power and efficiency. This allows the Su-57 to operate from shorter runways compared to conventional fighter jets, providing enhanced operational flexibility and adaptability for a wide array of missions.

The ability to take off from short runways is a crucial advantage for modern fighter jets, particularly in regions with limited airstrip infrastructure. The Su-57, powered by the AL-41 engine, offers a compelling solution to this challenge, making it an ideal platform for operations in diverse environments, from forward-deployed bases to rugged terrain where long runways may not be feasible.

The demonstration at Aero India 2025 not only showcased the raw power of the AL-41 engine but also highlighted the potential of fifth-generation fighters to operate flexibly and efficiently across various combat scenarios. These capabilities could revolutionize the way air forces plan and execute missions, especially in areas with limited infrastructure or under high-threat conditions.

Furthermore, the Su-57's ability to take off from short runways underscores its cost-effectiveness. Unlike traditional fighter jets with STOL capabilities that often require specialized and expensive infrastructure, the Su-57 achieves this feat without significant additional investment in airfield infrastructure.

This breakthrough technology opens up new possibilities for air power projection and enhances the operational capabilities of air forces worldwide. The Su-57's performance at Aero India 2025 has firmly established it as a game-changer in modern military aviation.
 
I always said IAF should consider AL-51 derivative for Super Sukhoi upgrade rather than the current AL-31. Recently 12 Su-30MKI were ordered, instead one full squadron would have been ordered & out of 18 Su-30MKI, 2 should have been handed over to HAL & one for DRDO/GTRE for test bed. In one MKI AL-51 derivative & another AL-41 should be integrated & tested since Super Sukhoi is going to remain till 2060.
 
It's good. But the engine is not enough. As of now, the Su-57 is an untested and unproven aircraft. The PW NEO is also a great engine, excellent efficiency and cost, but started to fail in numbers because of inadequate testing. Go Air had to fold. Indigo and others, so many aircraft u/s for engines.
 
Power has not been the big issue with russian engines. Its always been about reliability, engine life and maintenance cycles. What are the specifications of those metrics?
 
Even as of yet, we have yet to see one picture or video of it flying with two AL51s, it's always one 51 and one 41 for failsafe indicating it's still in testing.

I do think the AL51 variant with flat nozzles should be reconsidered. But don't get one with the AL41 which was not designed for stealth and gives it away completely on IR.
 
I always said IAF should consider AL-51 derivative for Super Sukhoi upgrade rather than the current AL-31. Recently 12 Su-30MKI were ordered, instead one full squadron would have been ordered & out of 18 Su-30MKI, 2 should have been handed over to HAL & one for DRDO/GTRE for test bed. In one MKI AL-51 derivative & another AL-41 should be integrated & tested since Super Sukhoi is going to remain till 2060.
I don''t think the AL51 is drop in compatible with the AL31, that's why they made the different spin on it made to drop in upgrade AL31 and AL41's with the new longer life of the AL51.
 
I always said IAF should consider AL-51 derivative for Super Sukhoi upgrade rather than the current AL-31. Recently 12 Su-30MKI were ordered, instead one full squadron would have been ordered & out of 18 Su-30MKI, 2 should have been handed over to HAL & one for DRDO/GTRE for test bed. In one MKI AL-51 derivative & another AL-41 should be integrated & tested since Super Sukhoi is going to remain till 2060.
AL-41 is not being considered because of sheer cost and potential modification issues for the airframe, plus any replacement of the engine will consume lots of time.

The same logic applies to the AL-51 engine, which even though much more capable than the AL-31/41 (going by Russian claims alone) will face the same issues - namely cost, modification potholes, time required, and spares supply issues.

Remember, even before the Ukraine sanctions, Russia had quite a hard time supplying spares to the services on time, because of which the MKI fleet always had lower readiness levels. Due to efforts made by Late RM Parrikar, IAF and HAL finally decided to increase the domestic production of spares for AL-31F engines, which came in handy post the Ukraine war. Since India today has the necessary know-how about the AL-31 engines, it can be overhauled and maintained in-house.
 

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